Sorry, it's even worse, I picked the gallon figures off the Internet because I was lazy. Thanks for the correction and calling me out.
It seems the Twingo figure was in UK mpg, so US mpg would be closer to 40 mpg (US).
Same for the Maruti figure, it would actually be 50 to 60 mpg (US).
From what I read, both are still way more efficient than your average American car.
I'd like to get an Accent, but they're close to 30.000 dollars after (humungous) taxes here in Uruguay.